Toothbrush



FIG. 1 is a view of a toothbrush embodying my new design.

FIG. 2 is a left side elevation view of FIG. 1; and,

FIG. 3 is a top, front, and left perspective of FIG. 1.

The broken lines showing bristles, a chamber, a base, and a support postillustrate portions of the toothbrush that form no part of the claimeddesign.

The ornamental design for a toothbrush, as shown and described.